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# The 180 students in a group are to be seated in rows so that

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Re: The 180 students in a group are to be seated in rows so that [#permalink]
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sarb wrote:
The 180 students in a group are to be seated in rows so that there is an equal number of students in each row. Each of the following could be the number of rows EXCEPT

(A) 4
(B) 20
(C) 30
(D) 40
(E) 90

(A) $$\frac{180}{4} = 45$$
(B) $$\frac{180}{20} = 9$$
(C) $$\frac{180}{30} = 6$$
(D) $$\frac{180}{40} = 4.50$$
(E) $$\frac{180}{90} = 2$$

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Re: The 180 students in a group are to be seated in rows so that [#permalink]
All the options have same factors as of 180 apart from 40.

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The 180 students in a group are to be seated in rows so that [#permalink]
A 180/4 45 ROWS
B 180/20 9 ROWS
C 180/30 6 ROWS
D 180/40 4.5 ROWS IT IS NOT FULL ROWS SO IT IS AN ANSWER
E 180/90 2 ROWS­
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Re: The 180 students in a group are to be seated in rows so that [#permalink]
­
(A) 180/4=45
(B) 180/20=9
(C) 180/30=6
(D) 180/40=4.5
(E) 180/90=2
Re: The 180 students in a group are to be seated in rows so that [#permalink]
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